"Don't expect RIM to open source its entire operating system, or its radio stack. But the original smartphone company is gambling its future success on open source, and it has an expert on board to help. Mary Branscombe asked Senior Technical Director for Open Software, Eduardo Pelegri Llopart, where open source fits in at RIM."

I don't actually know if this information has been officially stated anywhere before. Using QML, RIM could create an absolutely competitive user experience, on par with iOS and WP7 (on framerate and fluidity), and easily exceeding Android UX.

And this is something that will get much better on Qt5, when the graphics model becomes more directly GPU accelerateable (ok, that's not a real word).